BirdAnalyst
BBS Route · Maryland · BCR 28

Oldtown Bird Survey Route

A standard 50-stop Breeding Bird Survey route. 107 species recorded across 54 survey years, still active.

107Species RecordedSpecies recordedDistinct species detected on standard-protocol BBS runs here across all years on record — a measure of survey breadth, not a complete checklist.Full methodology →
54Years SurveyedYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →
1970–2025Span
3Observers

Bird Species Found on Maryland Oldtown

Top 40 of 107 species by most recent count. Each links to its species trend.

Species recorded on the Oldtown route.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →History
Red-eyed VireoVireonidae912025+233%1972
Indigo BuntingCardinalidae362025+37%1972
Scarlet TanagerCardinalidae322025+1%1972
Chipping SparrowPasserellidae262025-24%1972
Eastern Wood-PeweeTyrannidae252025+11%1972
Worm-eating WarblerParulidae232025+409%1972
OvenbirdParulidae222025+188%1973
Wood ThrushTurdidae202025-74%1972
Red-bellied WoodpeckerPicidae192025+318%1972
Blue-gray GnatcatcherPolioptilidae192025+638%1972
Northern CardinalCardinalidae172025+1%1972
Mourning DoveColumbidae162025+13%1972
Tufted TitmouseParidae152025+11%1972
American RobinTurdidae142025-28%1972
Acadian FlycatcherTyrannidae132025+343%1973
Eastern TowheePasserellidae132025-77%1972
American RedstartParulidae122025+336%1973
White-breasted NuthatchSittidae122025+0%1972
Carolina WrenTroglodytidae122025+327%1973
American CrowCorvidae112025-70%1972
Eastern PhoebeTyrannidae102025+108%1972
Blue JayCorvidae102025-23%1972
Pileated WoodpeckerPicidae102025+61%1973
Hooded WarblerParulidae92025+400%1972
MallardAnatidae91978n/an/a
Pine WarblerParulidae82025+150%1972
Black-capped ChickadeeParidae72025-26%1972
Yellow-throated VireoVireonidae62025+367%1972
Yellow-billed CuckooCuculidae52024-12%1972
Downy WoodpeckerPicidae52025-32%1972
Cerulean WarblerParulidae52025+275%1974
Prairie WarblerParulidae52025+7%1972
Northern MockingbirdMimidae52025+22%1972
Brown ThrasherMimidae52025-35%1972
Chimney SwiftApodidae42021-40%1976
Great Crested FlycatcherTyrannidae42025-41%1972
Brown-headed CowbirdIcteridae42025-42%1972
American GoldfinchFringillidae42025-20%1972
Field SparrowPasserellidae42025-72%1972
Barn SwallowHirundinidae42025-27%1972

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. A route is a sample, not a census.